Ahmad said there was bright sunshine when the cable cars were in motion. But, he said, "suddenly a gush of strong wind uprooted a pine tree that hit another large pine tree, whose branch fell on the cable derailing it from the pulley.

"The system stopped operation and we found out that the cable had been derailed between the fifth and sixth towers.

"After getting derailed, the cabins in this sector started swinging dangerously but no cabin crashed to the ground," he insisted. "What caused the deaths of our guests was the shattering of glass.

"After the glass shattered, the occupants were thrown out of the cabin because of the way the car was dangerously swinging."

The dead were identified as Jayant Anderaskar, his wife Manisha and their daughters Anagha and Jhanvi. They were from Shalimar Bagh in Delhi.

The other three victims were identified as Mukhtar Ahmed Ganie, Javed Ahmed Khandey and Farooq Ahmed.

It was the first such disaster in the ropeway project which has 36 cabins and 18 towers and is a joint venture of the Jammu and Kashmir government and a French firm. It is hugely popular with tourists who flock to Gulmarg, a skiing hub.

Manager Ahmad added that the system was restored in a record time of two hours and other occupants in different cabins were rescued.

The Senior Superintendent of Police in Baramulla, Imtiyaz Hussain, told IANS: "We have registered a FIR into the accident. If investigations reveal any dereliction or violation of the SOP, we will book those responsible."

The two-stage Gulmarg cable car lift ferries people to a height of 13,780 feet above the sea level. It is the world's second highest operating cable car project, with ferrying capacity of 600 people in one hour.

The first stage of the cable car transfers people from the Gulmarg resort at 2,600 metres (8,530 feet) to Kongdori station in the bowl-shaped Kongdori Valley, according to the company which operates the cable car.

The second stage takes people to a height of 3,747 metres (12,293 feet) on Kongdori mountain.